Kinetic Modeling for the “One-Pot” Hydrogenolysis of Cellulose to Glycols over Ru@Fe3O4/Polymer Catalyst

Oleg Manaenkov,Valentina Matveeva,Yuriy Kosivtsov,Olga Kislitsa,Alexander Sidorov,Mikhail Sulman,Alexey Bykov,Valentin Sapunov

doi:10.3390/reactions3010001

Oleg Manaenkov, Valentina Matveeva + Show 6 more

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https://doi.org/10.3390/reactions3010001

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Journal: Reactions	Publication Date: Dec 22, 2021
Citations: 4	License type: CC BY 4.0

Affiliation: Tver State Technical University, Tver State University

Abstract

Despite numerous works devoted to the cellulose hydrogenolysis process, only some of them describe reaction kinetics. This is explained by the complexity of the process and the simultaneous behavior of different reactions. In this work, we present the results of the kinetic study of glucose hydrogenolysis into ethylene- and propylene glycols in the presence of Ru@Fe3O4/HPS catalyst as a part of the process of catalytic conversion of cellulose into glycols. The structure of the Ru-containing magnetically separable Ru@Fe3O4/HPS catalysts supported on the polymeric matrix of hypercrosslinked polystyrene was studied to propose the reaction scheme. As a result of this study, a formal description of the glucose hydrogenolysis process into glycols was performed. Based on the data obtained, the mathematical model of the glucose hydrogenolysis kinetics in the presence of Ru@Fe3O4/HPS was developed and the parameter estimation was carried out. The synthesized catalyst was found to be characterized by the enhanced magnetic properties and higher catalytic activity in comparison with previously developed catalytic systems (i.e., on the base of SiO2). The summarized selectivity towards the glycols formation was found to be ca. 42% at 100% of the cellulose conversion in the presence of Ru@Fe3O4/HPS.

Highlights

Being the most abundant component of lignocellulose biomass, cellulose plays a vital role in the utilizing of renewable resources, and in providing additional opportunities for the production of different molecules-platforms through catalytic processes such as hydrogenolysis, oxidation, or selective reduction [1,2,3]
Ethylene glycol (EG) and propylene glycol (PG) can be obtained under one-pot conditions by hydrogenolysis of cellulose or polyols in the presence of heterogeneous catalysts [1,6,7,8]
We showed that Hyper-cross-linked polystyrene (HPS) has a hierarchical structure and contains about 40% of mesopores

Summary

Introduction

Being the most abundant component of lignocellulose biomass, cellulose plays a vital role in the utilizing of renewable resources, and in providing additional opportunities for the production of different molecules-platforms through catalytic processes such as hydrogenolysis, oxidation, or selective reduction [1,2,3]. The question of how to effectively catalyze the conversion of cellulose into desired products is an interesting subject for many researchers. EG and PG can be obtained under one-pot conditions by hydrogenolysis of cellulose or polyols in the presence of heterogeneous catalysts [1,6,7,8]. In the processes of hydrogenolysis of cellulose to glycols, Ru-containing catalytic systems are considered to be active catalysts [9,10,11,12,13]

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